Mercurial > gnulib
view m4/termios_h.m4 @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
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date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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# termios_h.m4 serial 4 dnl Copyright (C) 2010-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_TERMIOS_H], [ dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_TERMIOS_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([termios.h]) if test $ac_cv_header_termios_h != yes; then HAVE_TERMIOS_H=0 fi dnl Ensure the type pid_t gets defined. AC_REQUIRE([AC_TYPE_PID_T]) dnl Check for declarations of anything we want to poison if the dnl corresponding gnulib module is not in use, and which is not dnl guaranteed by C89. gl_WARN_ON_USE_PREPARE([[#include <termios.h>]], [tcgetsid]) ]) AC_DEFUN([gl_TERMIOS_MODULE_INDICATOR], [ dnl Use AC_REQUIRE here, so that the default settings are expanded once only. AC_REQUIRE([gl_TERMIOS_H_DEFAULTS]) gl_MODULE_INDICATOR_SET_VARIABLE([$1]) dnl Define it also as a C macro, for the benefit of the unit tests. gl_MODULE_INDICATOR_FOR_TESTS([$1]) ]) AC_DEFUN([gl_TERMIOS_H_DEFAULTS], [ GNULIB_TCGETSID=0; AC_SUBST([GNULIB_TCGETSID]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_DECL_TCGETSID=1; AC_SUBST([HAVE_DECL_TCGETSID]) HAVE_TERMIOS_H=1; AC_SUBST([HAVE_TERMIOS_H]) ])